signal: new signal handling backend based on signalfd

Linux-specific signal handling backend based on signalfd(2)
system call, and public function event_base_get_signal_method()
to obtain an underlying kernel signal handling mechanism.

Signed-off-by: Dmitry Antipov <dantipov@cloudlinux.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/event.c b/event.c
index a7a6b3f4..74678e1f 100644
--- a/event.c
+++ b/event.c
@@ -1860,6 +1860,13 @@ event_base_get_method(const struct event_base *base)
 	return (base->evsel->name);
 }
 
+const char *
+event_base_get_signal_method(const struct event_base *base)
+{
+	EVUTIL_ASSERT(base);
+	return (base->evsigsel->name);
+}
+
 /** Callback: used to implement event_base_loopexit by telling the event_base
  * that it's time to exit its loop. */
 static void